body {
    margin: 0;
}

#blocker {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

#instructions {
    width: 100%;
    height: 100%;

    display: -webkit-box;
    display: -moz-box;

    -webkit-box-orient: horizontal;
    -moz-box-orient: horizontal;
    box-orient: horizontal;

    -webkit-box-pack: center;
    -moz-box-pack: center;
    box-pack: center;

    -webkit-box-align: center;
    -moz-box-align: center;
    box-align: center;

    color: #ffffff;
    text-align: center;
    font-family: Arial;
    font-size: 14px;
    line-height: 24px;

    cursor: pointer;
}

#collimator {
    display: none;
    border-radius: 50%;
    background-color: red;
    width: 10px;
    height: 10px;
    position: fixed;
    transform: translateX(-50%) translatey(-50%);
    left: 50%;
    top: 50%;
    z-index: 10002;
}

#score-dash-board {
    font-size: 25px;
    left: 50%;
    position: fixed;
    transform: translateX(-50%);
    color: dimgray;
}